OK, got the Corsair H50 and was gonna post in the Corsair forum but this issue has more to do with the motherboard so I am going to ask here. How do you set the chassis fan 2 connection to run at 100% 24X7? I plugged the H50 radiator fan into the MB CPU header and the pump connection into Chassis 2. I was watching install videos on YouTube and the Corsair rep was saying that you need to keep the pump running 100% at all times. How do you do this using Asus Fan Xpert? I have it in turbo mode but it only runs at around 1188 rpm at idle.

How are you guys setting the H50 up via motherboard settings? Are you trying to run the pump at full load 24X7?

Very simple actually. Go to - Power - Hardware Monitor - Set CPU Q-Fan Control to "Disabled" and the Chassis Q-Fan Control to "Disabled". Essentially what you're saying is, you dont want the Q-Fan Control to automatically adjust or take control over the fan speeds, you want it disabled so it runs full throttle (100%) at all times. When that is done, check your RPM's on the pump, it should be sitting around ~1450 rpm's. Alternatively, you can plug it into PWR_FAN and it will run at 100% also, since there is no Q-Fan Control over this one fan connector.Edited by xmisery - 2/9/10 at 8:06pm

Anyone try this new 0702 bios ? Notes mention only processor support but there may be more than that... I'll probably give it a try and report back.

Hmm, interesting. I just installed 0506, released (01/11/2010) about 2 weeks ago, which was a nice little upgrade. I just went to the Asus site to look for this 0702 release you speak of, but, didn't see it listed, just the 0604, released (01/29/2010). How did you come across this new 0702 version? I wonder if its still in some sort of beta testing, since it didn't show up officially in the motherboard's bios firmware update section?Edited by xmisery - 2/9/10 at 8:07pm

Okay, I've done some more testing with this motherboard. For those who want to run their i7 920 D0's @ 4.20GHz at the lowest stable voltages, here are my BIOS settings.

NOTE: These settings were stable for me and should be for you as well. However, not all i7's are created equal, so YMMV. That said, these settings were tested against LinX - / Problem size: 25854 / Memory to use: 5120 / Times to run: 20. If you guys see some additional tweaks or changes to make this even better, please share.

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!!! UPDATE !!! - Using the "Offset" CPU Voltage Control w/ HT ==================================================
Follow the guides above and substitute with these settings below.NOTE: These offset settings were contributed by BlackDragon24.

NOTE: If these settings aren't stable for you, they should at least get you a good baseline to go by. You may need to slightly increase your "CPU Voltage" and/or "QPI/DRAM Core Voltage" one bump at a time from this point to get something stable for your specific chip.Edited by xmisery - 7/18/10 at 6:45pm

Anyone try this new 0702 bios ? Notes mention only processor support but there may be more than that... I'll probably give it a try and report back.

Just to follow-up I did flash to this new BIOS. Didn't see any changes. It did break Turbo-V though, moving the CPU Voltage slider and hitting apply would lock it in at 1.6v! Luckily I realized this before frying my CPU as the cores shot up to 100 instantly with Prime95 running. Had to stop prime then reboot to reset it to the BIOS-set voltage. I did load BIOS defaults and the problem persisted. So I reverted back to 0604 and it is now working fine again.

So at this point unless you have an new engineering sample CPU that otherwise isn't supported, I'd recommend skipping the 0702 BIOS. I think it will be posted on the main Asus support site tomorrow so beware.

Funny thing is I'm having a little better success overclocking the CPU now that it got zapped with major voltage for a few minutes. Actually got to 4.2v with some stability, at Vcore 1.35 and QPI/Dram 1.3. Temps were pushing 80 at full load so I backed down to 4 ghz, at slightly lower voltages that I needed before.